diff options
| author | Kazuki Yamaguchi <k@rhe.jp> | 2021-02-24 22:36:57 +0900 |
|---|---|---|
| committer | Kazuki Yamaguchi <k@rhe.jp> | 2021-11-07 17:09:14 +0900 |
| commit | 218bc7d3bc2c4ef492706b1eeb7f1bb03b777fa1 (patch) | |
| tree | 9ee1063eebe75b9db8f1565768736af564f56c29 | |
| parent | 461a902ae6071a3a79068460e9e645f382b245b5 (diff) | |
| download | linux-ky/patches-5.15.tar.gz | |
net: add comments to code where MTU is handled incorrectlyky/patches-5.15
But I'm not going to fix them - it's unlikely I actually hit these code
paths.
| -rw-r--r-- | net/ipv4/ip_output.c | 1 | ||||
| -rw-r--r-- | net/ipv4/raw.c | 1 | ||||
| -rw-r--r-- | net/ipv6/raw.c | 1 | ||||
| -rw-r--r-- | net/ipv6/route.c | 2 |
4 files changed, 5 insertions, 0 deletions
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c index 9bca57ef8b83..6bb2620bff61 100644 --- a/net/ipv4/ip_output.c +++ b/net/ipv4/ip_output.c @@ -1251,6 +1251,7 @@ static int ip_setup_cork(struct sock *sk, struct inet_cork *cork, cork->addr = ipc->addr; } + /* XXX: MTU */ cork->fragsize = ip_sk_use_pmtu(sk) ? dst_mtu(&rt->dst) : READ_ONCE(rt->dst.dev->mtu); diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c index bb446e60cf58..1216db101822 100644 --- a/net/ipv4/raw.c +++ b/net/ipv4/raw.c @@ -355,6 +355,7 @@ static int raw_send_hdrinc(struct sock *sk, struct flowi4 *fl4, struct rtable *rt = *rtp; int hlen, tlen; + /* XXX: MTU */ if (length > rt->dst.dev->mtu) { ip_local_error(sk, EMSGSIZE, fl4->daddr, inet->inet_dport, rt->dst.dev->mtu); diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c index 60f1e4f5be5a..c573ab6b9795 100644 --- a/net/ipv6/raw.c +++ b/net/ipv6/raw.c @@ -628,6 +628,7 @@ static int rawv6_send_hdrinc(struct sock *sk, struct msghdr *msg, int length, int hlen = LL_RESERVED_SPACE(rt->dst.dev); int tlen = rt->dst.dev->needed_tailroom; + /* XXX: MTU */ if (length > rt->dst.dev->mtu) { ipv6_local_error(sk, EMSGSIZE, fl6, rt->dst.dev->mtu); return -EMSGSIZE; diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 91aa6d762969..44772eac19a1 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -1999,6 +1999,7 @@ static bool rt6_mtu_change_route_allowed(struct inet6_dev *idev, if (dst_mtu(&rt->dst) >= mtu) return true; + /* XXX: MTU */ if (dst_mtu(&rt->dst) == idev->cnf.mtu6) return true; @@ -4909,6 +4910,7 @@ static int fib6_nh_mtu_change(struct fib6_nh *nh, void *_arg) struct inet6_dev *idev = __in6_dev_get(arg->dev); u32 mtu = f6i->fib6_pmtu; + /* XXX: MTU */ if (mtu >= arg->mtu || (mtu < arg->mtu && mtu == idev->cnf.mtu6)) fib6_metric_set(f6i, RTAX_MTU, arg->mtu); |